A 49-year-old man, George Sodini, walked into an LA Fitness center in a suburban Pennsylvanian town and opened fire on an aerobics class full of women, killing three and injuring at least 10 before shooting himself.

Sodini left behind an online journal which details his hatred of women, and how he blames them for his loneliness (link at the bottom).

He is not alone. Apparently there is a misogynistic "club" called True Forced Loneliness, or TFL. Here is a video of the unofficial spokesman for the club, Bill, and what he has to say about the shootings: